JEE Main 2026 — Statistics Question with Solution
JEE Main 2026 (24 January Shift 2)
Question
Let and for some . If the mean and variance of the elements of Y are 30 and 750, respectively, then the sum of all possible values of is
Choose an option
Show full solutionCorrect option: A
Correct answer
A60
Step-by-step explanation
Mean of , Variance of .
For : Mean of and Variance of .
or .
If : .
If : .
Sum of all possible values of .
For : Mean of and Variance of .
or .
If : .
If : .
Sum of all possible values of .
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This is a previous-year question from JEE Main 2026, covering the Statistics chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.